Receptacle for electric lamps.



J. G. PETJE'JRSOBT. REGEPTAGLB FOB ELECTRIC LAMPS., 7 APPLICATION FILED NOV. 1 0, 1910.

985,629. v Patented Feb. 28, 1911.

UN TED A S PATENT OFFICE.

JOHANN G. PETERSON, OF HARTFORD, CONNECI'ICUT, ASSIGNOR TO ARROW ELECTRIC COMPANY, OF HARTFORD, CONNECTICUT. A CORPORATION OF CONNECTI- CUT.

RECEPTACLE FOR ELECTRIC LAMPS.

Specificationof Letters Patent. Patented Feb. 28, 1911.

Application filed November 10, 1910. Serial No. 591,579.

To all whom it may concern: I

Be it known that I, Jon/nus G. Pn'rnnson, a citizen of the United States .of America,

' and residing in the city of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Receptacles for Electric Lamps, of which the following is a specification.

My invention relates to receptacles for electric lamps, plugs, etc., and particularly to the features thereof more particularly set forth in the following description and .of electric receptacle shown in Fig. 1 comprises the usnal insulating buttons A and B, the latter carrying the yok 10 with its standards 11 and 12 in which the switch spindle 13 is journaled, and the spring contact 14 fast with the yoke and pressing the cam 15, while the terminal 16 is formed by a-lug on the standard 11. The upper button A carries as usual the coiiperating spring contact 17 and the center contact 18 and terminal plate 19, but is modified as follows:

' Instead of permitting the spring contact 17,

cam is snapped into the o which at its fixed end an is in contact with the screw shell 30, to vibrate freely above the cam 15, when the latter is in the oft position, (Fig. 3) I lengthen the same and rest its free end upon a recessed shoulder-20 formed in the upper face of the button. This a has the distinct advantage of preventing the usual vibration, so injurious to the lam p filament, especially in tungsten lam s, when the position.

Secondly, the recess formed in the upper .faceof the button A 'for the reception of" the spring center contact 18, is deepened by raising the sides of the U-shaped boss 22 so that not only are the-terminal plate 1'9 and the base of the contact confined against angular displacement, but, upon depression,

the sides of the enlarged and upwardly boss, bear against the sides of the latter and protectthe bond 23, by which the spring is obtaincd,from being so sharply angled as to permanently affect the same and deprive it of its spring-function. In fact 'when the contact wing is depressed .unt-il it contacts with the sides of the boss, the bend 23 is relieved from further strain and a new fulcrum at the point of contact between the sides of the boss and the lower portion of the upward angled wing 21 is established and the By this means a center contact is provided which is assured of all of the spring obtained by the bend 23 and this resiliency is sufficient in all cases to obtain a close center connection with the lamp or plug inserted in the receptacle. Further it will be noted that but a single securing screw 24 is necessary. to hold both the terminal plate 19 and the center contact- 21 in position, thus simplifying the assembly ofthe parts whileat the same time securing the desirable rigidity of the terminal plate and the resiliency of the contact piece. These features last mentioned are equally applicable to a wall receptacle such as shown in Fig. 5, the only difference being that the terminal plate 25 instead of being angled-downward as is necessary in socket construction of the type above referred to, is carried out straight through the recess 26 in the porcelain well 27 formed upon the base 28, so that the binding screw 29 is readily accessible for wiring.

I claim as my invention scribed, having an insulating base with arecessed U-shaped bossthereon, a center contact located therein with -upward angled contact wing overlying the sides of said boss, in combination with a terminal plate also secured inthe recess of the boss in connection with said center contact, substantially as and for the purposedescribed.

2. An electric receptacle of-the type described, having an ins dating base with re cessed U-shaped boss thereon, and a'center contact and a terminal plate both confined in the recess of the boss, in combination with a single securing screw for holding said plate and contact in said recess.

3. A receptacle of the type described, havangled contact wing 21, which overlies the spring metal bends only from this point.

'1. An electric receptacle of the type de- V ing-an insulating base with recessed shoulname to thisspecificatien, der, :1, contactsh'ell carried by said: base and two subscribing witnesses. -a spring contaet beneath and in contact with Y JOHANN G PETERSON in the presence of said shell havlngits free end resting upon 5 said recessed shoulder on the base, substah- Witnesses: tially as and for the purpose described. BENJ. Psmcms," In testimony whereef I have signed my H. M. SA NDERS. 

